CN107551837A - One kind improvement is safety-type to match somebody with somebody ammonia device and matches somebody with somebody ammonia method automatically automatically - Google Patents
One kind improvement is safety-type to match somebody with somebody ammonia device and matches somebody with somebody ammonia method automatically automatically Download PDFInfo
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- CN107551837A CN107551837A CN201710829350.2A CN201710829350A CN107551837A CN 107551837 A CN107551837 A CN 107551837A CN 201710829350 A CN201710829350 A CN 201710829350A CN 107551837 A CN107551837 A CN 107551837A
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Abstract
A kind of improvement is safety-type to match somebody with somebody ammonia method with ammonia device and automatically automatically, and the device is automatic with ammonia switch board, Scatula and anti-the escaping of ammonia device, ammonia detection and warning system, ammonia absorption protective device including what is be connected；The electrical conductivity of ammoniacal liquor in Scatula is detected using conductivity meter, the concentration of ammoniacal liquor is converted into by the automatic PLC matched somebody with somebody in ammonia switch board, when the concentration is less than setting value, PLC sends instruction unpack ammonia circulation pump and outdoor ammonia electrically operated valve；When concentration reaches setting value, PLC sends instruction and closes ammonia circulation pump and outdoor ammonia electrically operated valve；When medicine-chest liquid level is less than the lower bound position of setting value, PLC sends instruction and opens demineralized water water inlet electrically operated valve, and when reaching high spacing, PLC sends instruction and closes demineralized water water inlet electrically operated valve；The present invention does not need manual operation in the configuration process of ammoniacal liquor；Meanwhile ammonia is introduced interior by ammonia circulation pump after outdoor is by the absorption of ammonia absorption protective device in the form of ammoniacal liquor, indoor electric equipment need not carry out explosion-proof upgrading.
Description
Technical field
The present invention relates to the unit of thermal power plant, nuclear power station feedwater ammonification technical field, and in particular to one kind is improved safety-type
Automatically match somebody with somebody ammonia device and match somebody with somebody ammonia method automatically.
Background technology
Thermal power plant, the water supply system of nuclear power station generally use ammonification anti-corrosion, and are configured to necessarily using ammoniacal liquor mostly at present
The water supply system of unit is added to after the ammoniacal liquor of concentration, people will touch ammoniacal liquor during ammoniacal liquor is configured, therefore occupation is pacified
Affect entirely.At the same time, ammoniacal liquor is configured by matching somebody with somebody ammonia device automatically between dosing using ammonia and demineralized water
During, it is necessary to which the electrical equipment between dosing is upgraded into explosion-proof type, otherwise may have risk of explosion.
The content of the invention
In order to solve the above-mentioned problems of the prior art, improved it is an object of the invention to provide one kind safety-type automatic
With ammonia device and automatically match somebody with somebody ammonia method, do not need manual operation during ammoniacal liquor is configured, concentration and medicine-chest liquid level with ammonia
Height can freely set, and ammonia by outdoor ammonia absorption protective device after in the form of high concentration ammoniacal liquor enter
Between dosing, indoor electric equipment is without upgrading into explosion-proof type.
To achieve the above objectives, the present invention adopts the following technical scheme that：
One kind improve it is safety-type matches somebody with somebody ammonia device automatically, including be connected automatically escape with ammonia switch board 1, Scatula and anti-ammonia
Ease device 2, ammonia detection and warning system 3 and ammonia absorption protective device 4；
It is described to include PLC 1-1 with ammonia switch board 1 automatically, the man-machine interface 1-2 being connected with PLC 1-1,
Conductivity meter 1-3, ammonia circulation pump 1-4, demineralized water water inlet electrically operated valve 1-5；
The Scatula and anti-the escaping of ammonia device 2 include medicine-chest 2-1, are arranged on the ammonia circulation pump at middle part in medicine-chest 2-1
Return pipe 2-2, be arranged in medicine-chest 2-1, below ammonia circulation blowback water pipe 2-2 with the automatic conductance with ammonia switch board 1
The conductance electrode 2-3 of rate instrument 1-3 connections, connection ammonia scrubber 2-4 and medicine-chest 2-1 moisturizing overflow pipe 2-5, the ammonia are inhaled
The pipeline 2-7 that filling pipe 2-6 is connected with the top of device 2-4 and connects air-discharging is received, being provided with first gas on pipeline 2-7 stops
Return valve 2-8, with ammonia scrubber 2-4 at the top of incoming air conduit road 2-9 on be provided with second gas check-valves 2-10；Described
The liquid level sensor 2-11 being connected with matching somebody with somebody the PLC 1-1 in ammonia switch board 1 automatically is additionally provided with Scatula 2-1；
The ammonia detection and warning system 3 include ammonia detector 3-1, the sound on the spot being connected with ammonia detector 3-1
Light alarm instrument 3-2 and remote alarms instrument 3-3；
The ammonia absorption protective device 4 includes 304 stainless steels or the ejector 4-1 of PVDF materials and ammonia is entered in outdoor
Pneumoelectric movable valve 4-2.
It is described above to match somebody with somebody ammonia method automatically with ammonia device automatically, utilize what is be connected with the conductance electrode 2-3 in medicine-chest 2-1
The electrical conductivity of ammoniacal liquor in conductivity meter 1-3 detection medicine-chests 2-1, and send conductivity data to PLC1-1, changed by PLC1-1
The concentration of ammoniacal liquor is counted as, when the concentration is less than setting value, PLC1-1 sends instruction unpack ammonia circulation pump 1-4 and ammonia is entered in outdoor
Pneumoelectric movable valve 4-2, by 304 stainless steels or the ejector 4-1 of PVDF materials by the low concentration ammoniacal liquor in medicine-chest 2-1 and
Ammonia is mixed into high concentration ammoniacal liquor, and medicine-chest 2-1 is transmitted back to again through ammonia circulation blowback water pipe 2-2；When reaching setting value by
PLC1-1 sends instruction closing ammonia circulation pump 1-4 and ammonia electrically operated valve 4-2 is entered in outdoor；Medicine-chest 2-1 magnetic double level gauge
2-11 sends liquid level signal to PLC1-1, and when liquid level is less than the lower bound position of setting value, PLC1-1 sends instruction and opens desalination
Water water inlet electrically operated valve 1-5, fills demineralized water to medicine-chest 2-1；When reach level set value it is high spacing when, PLC1-1 sends instruction
Close demineralized water water inlet electrically operated valve 1-5；
When filling demineralized water to medicine-chest 2-1 by filling pipe 2-6, medicine-chest 2-1 liquid levels rise, because system is closed, in liquid level
The gas in portion is compressed, and now second gas check-valves 2-10 is closed in pressured state, and gas can only be arranged from top
Into ammonia scrubber 2-4 demineralized water, the ammonia in air is absorbed by demineralized water, air by first gas check-valves 2-8 and
Pipeline 2-7 discharges are outdoor；When stopping making up a prescription, and with the ammoniacal liquor configured to during unit dosing, liquid level is gradually reduced, medicine-chest 2-
1 headroom forms negative pressure, and at this moment first gas check-valves 2-8 is closed, the second gas when negative pressure reaches certain value
Body check-valves 2-10 is opened, and air enters medicine-chest 2-1, and negative pressure is destroyed, and second gas check-valves 2-10 is again automatic to close；
Ammonia content in ammonia detector 3-1 detection room airs, when more than setting value, sound and light alarm instrument 3-2 on the spot
Sound and light alarm on the spot and remote alarms can be sent respectively with remote alarms instrument 3-3, and notify distant place operator on duty to handle；Ammonia simultaneously
Gas detector 3-1 is sent enters ammonia electrically operated valve 4-2 outside instruction close chamber；Staff outer between dosing can close ammonification once
Manually operated door.
The reduction formula of the concentration of the ammoniacal liquor is：C=(13.2S2+62.7S)×10-7(%), wherein c are that ammoniacal liquor is dense
Degree, S is electrical conductivity (μ S/cm).
The present apparatus can freely be set by man-machine interface 1-2 needs the concentration with ammoniacal liquor, and ammonia concn is below 2.5%
Select electrode constant be 0.1 conductance electrode 2-3, concentration be more than 2.5%, selection electrode constant for 1 conductance electrode 2-3.
Medicine-chest 2-1 lower bound position and it is high it is spacing can freely be set by man-machine interface 1-2, but lower bound position cannot be below
0, the high spacing maximum range that must not be higher than liquid level gauge.
Compared to the prior art the present invention, has the following advantages that：
Apparatus of the present invention configure ammoniacal liquor using gaseous ammonia (come from liquid ammonia gasification --- for flue gas denitrification system), and people is not
Contacted with ammoniacal liquor, there is no ammonia taste between dosing, all is all carried out automatically with ammonia system in pipeline and closed container.Due to
24% ammoniacal liquor (ammonia concn maximum) also wants expensive 30% than 100% gaseous ammonia (coming from liquid ammonia vaporization), so using this dress
Ammonia expense more than 80% can be economized on by putting.
Meanwhile the low concentration ammoniacal liquor in ammonia and medicine-chest is mixed into high strength ammonia in outdoor by ammonia absorption protective device
Water, then interior is pumped into by circulation, avoid ammonia and be directly entered interior, indoor electric needs upgrade into explosion-proof type.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is to match somebody with somebody ammonia switch board control system schematic diagram automatically.
Fig. 3 is Scatula and anti-the escaping of ammonia system schematic.
Fig. 4 is warning system schematic diagram.
Fig. 5 is ammonia absorption protective device schematic diagram.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in figure 1, the present invention it is a kind of improve it is safety-type match somebody with somebody ammonia device automatically, including what is be connected match somebody with somebody ammonia switch board automatically
1st, Scatula and anti-the escaping of ammonia device 2, ammonia detection and warning system 3 and ammonia absorption protective device 4.
As shown in Fig. 2 described include PLC1-1 with ammonia switch board 1 automatically, man-machine interface 1-2, the electricity being connected with PLC1-1
Electrical conductivity instrument 1-3, ammonia circulation pump 1-4, demineralized water water inlet electrically operated valve 1-5.
Automatically it is made up of with ammonia switch board ammonification control system and tank level control system.
Ammonification control system is made up of PLC 1-1, man-machine interface 1-2, conductivity meter 1-3 and ammonia circulation pump 1-4.Its
The course of work is：Using the electrical conductivity of ammoniacal liquor in conductivity meter 1-3 detection medicine-chests 2-1, and send conductivity data to PLC controls
Device 1-1 processed, PLC 1-1 are according to electrical conductivity (S) and ammonia concn c (%) reduction formula c=(13.2S2+62.7S)×
10-7(%) is converted into the concentration of ammoniacal liquor in medicine-chest, and when the concentration is less than setting value, PLC 1-1 sends instruction unpack ammonia
Ammonia electrically operated valve 4-2 is entered in water-circulating pump 1-4 and outdoor, by 304 stainless steels or the ejector 4-1 of PVDF materials by medicine
Low concentration ammoniacal liquor and ammonia in case 2-1 are mixed into high concentration ammoniacal liquor, then are transmitted back to medicine-chest 2-1；Closed when reaching setting value
Ammonia electrically operated valve 4-2 is entered in ammonia circulation pump 1-4 and outdoor.
Tank level control system is made up of PLC1-1, demineralized water water inlet electrically operated valve 1-4 and liquid level sensor 2-11.Its work
It is as process：Medicine-chest 2-1 liquid level sensor 2-11 sends liquid level signal to PLC1-1, when liquid level is less than the lower bound of setting value
During position, PLC1-1 sends instruction and opens demineralized water water inlet electrically operated valve 1-5, fills demineralized water to medicine-chest 2-1；When arrival level set
Value it is high spacing when, PLC 1-1 sends instruction and closes demineralized water water inlet electrically operated valve 1-5.
Other explanations：1. can freely set needs the concentration with ammoniacal liquor.Electrode constant may be selected in concentration below 2.5%
0.1 electrode；Concentration is more than 2.5%, and the electrode that electrode constant is 1 may be selected.2. the lower bound position of medicine-chest and height are spacing can be certainly
By setting, but lower bound position cannot be below 0, the high spacing maximum range that must not be higher than liquid level gauge.Filled 3. being removed after the completion of system debug
Outside ammonia bypass door is closed, all manually-operated gates are opened entirely.
As shown in figure 3, the Scatula and anti-the escaping of ammonia device 2 include medicine-chest 2-1, middle part in medicine-chest 2-1 is arranged on
Ammonia circulation blowback water pipe 2-2, be arranged in medicine-chest 2-1, above ammonia circulation blowback water pipe 2-2 with matching somebody with somebody ammonia switch board automatically
The conductance electrode 2-3 of conductivity meter 1-3 connections in 1, connection ammonia scrubber 2-4 and medicine-chest 2-1 moisturizing overflow pipe 2-5,
Filling pipe 2-6 is connected with the top of the ammonia scrubber 2-4 and connects the pipeline 2-7 of extraneous air, is set on pipeline 2-7
Have first gas check-valves 2-8, connection medicine-chest 2-1 at the top of with ammonia scrubber 2-4 at the top of pipeline on be provided with the second gas
Body check-valves 2-10；It is additionally provided with the Scatula and anti-the escaping of ammonia device 2 with being controlled automatically with the PLC in ammonia switch board 1
The liquid level sensor 2-11 of device 1-1 connections processed.
Medicine-chest 2-1 materials：Stainless steel, titanium or plastics.
Ammonia circulation blowback water pipe 2-2：It is arranged in the middle part of medicine-chest and is uniformly distributed.
Conductance electrode 2-3：Electrode constant is selected with concentration according to required, and electrode is arranged on and filled 50 above ammonia gas distribution pipe
At~100mm.
Moisturizing overflow pipe 2-5：Medicine-chest is overflowed to from ammonia scrubber.
Ammonia scrubber 2-4：The mainly outdoor air of purification discharge.Operation principle is as follows:When by filling pipe 2-6 to
When medicine-chest 2-1 fills demineralized water, medicine-chest 2-1 liquid levels rise, and because system is closed, the gas on liquid level top is compressed, because of second gas
Check-valves 2-10 is closed, and gas can only be discharged in ammonia scrubber 2-4 demineralized water from top, the ammonia quilt in air
Demineralized water is absorbed, and air is discharged outdoor by first gas check-valves 2-8 and pipeline 2-7；When stopping making up a prescription, and with being matched somebody with somebody
To during unit dosing, liquid level is gradually reduced ammoniacal liquor, and medicine-chest 2-1 headroom forms negative pressure, at this moment at first gas check-valves 2-8
In closed mode, when negative pressure reaches certain value, second gas check-valves 2-10 is opened, and air enters medicine-chest 2-1, and negative pressure is destroyed,
Second gas check-valves 2-10 is again automatic to close.
As shown in figure 4, the ammonia detection and warning system 3 include ammonia detector 3-1, connect with ammonia detector 3-1
The instrument of the sound and light alarm on the spot 3-2 and remote alarms instrument 3-3 connect.
Ammonia content in the surrounding air of ammonia detector 3-1 detection ammonias absorption protective device 4, when more than setting value,
Sound and light alarm instrument 3-2 and remote alarms instrument 3-3 can send sound and light alarm on the spot and remote alarms respectively on the spot, and notify a distant place to be worth
Class's personnel's processing；Ammonia detector 3-1 is sent simultaneously enters ammonia electrically operated valve 4-2 outside instruction close chamber；Staff can add
It is outer between medicine to close manually operated door of ammonification.
As shown in figure 5, affiliated ammonia absorption protective device 4 includes 304 stainless steels or the ejector 4-1 of PVDF materials
Enter ammonia electrically operated valve 4-2 with outdoor.
When medicine-chest 2-1 ammonia concn is less than setting value, PLC1-1 sends instruction unpack ammonia circulation pump 1-4, in jet
Device 4-1 ammonia inlet port produces negative pressure, and outdoor is opened after 5 seconds and enters ammonia electrically operated valve 4-2, and ammonia is inhaled into ejector 4-1,
High concentration ammoniacal liquor is mixed into the low concentration ammoniacal liquor in ejector 4-1, medicine-chest 2-1, medicine are returned to through ammonia circulation blowback water pipe 2-2
Ammonia concn in case 2-1 is stepped up；Sent when reaching setting value by PLC1-1 and enter ammonia motor-driven valve outside instruction close chamber
Door 4-2, closes ammonia circulation pump 1-4 after 5 seconds.
Claims (6)
1. one kind improvement is safety-type to match somebody with somebody ammonia device automatically, it is characterised in that：Including be connected automatically with ammonia switch board (1), match somebody with somebody
Medicine-chest and anti-the escaping of ammonia device (2), ammonia detection and warning system (3) and ammonia absorption protective device (4)；
It is described to include PLC (1-1), the man-machine interface (1-2) being connected with PLC (1-1), conductivity meter with ammonia switch board (1) automatically
(1-3), ammonia circulation pump (1-4), demineralized water water inlet electrically operated valve (1-5)；
The Scatula and anti-the escaping of ammonia device (2) include medicine-chest (2-1), are arranged on the ammonia circulation at middle part in medicine-chest (2-1)
Blowback water pipe (2-2), be arranged in medicine-chest (2-1), below ammonia circulation blowback water pipe (2-2) with matching somebody with somebody ammonia switch board automatically
(1) conductance electrode (2-3) of conductivity meter (1-3) connection in, the moisturizing of connection ammonia scrubber (2-4) and medicine-chest (2-1)
Overflow pipe (2-5), the pipeline (2-7) of filling pipe (2-6) and air-discharging is connected with the top of the ammonia scrubber (2-4),
First gas check-valves (2-8) is provided with pipeline (2-7), at the top of connection medicine-chest (2-1) and at the top of ammonia scrubber (2-4)
Incoming air conduit road (2-9) on be provided with second gas check-valves (2-10)；It is additionally provided with the Scatula (2-1) and oneself
The liquid level sensor (2-11) of dynamic PLC (1-1) connections with ammonia switch board (1)；
The ammonia detection and warning system (3) include ammonia detector (3-1), are connected on the spot with ammonia detector (3-1)
Sound and light alarm instrument (3-2) and remote alarms instrument (3-3)；
The ammonia absorption protective device (4) includes 304 stainless steels or the ejector (4-1) of PVDF materials and ammonia is entered in outdoor
Pneumoelectric movable valve (4-2).
2. match somebody with somebody ammonia method automatically with ammonia device automatically described in claim 1, it is characterised in that：Using with medicine-chest (2-1)
The electrical conductivity of ammoniacal liquor in conductivity meter (1-3) the detection medicine-chest (2-1) of conductance electrode (2-3) connection, and conductivity data is passed
PLC (1-1) is given, the concentration of ammoniacal liquor is converted into by PLC (1-1), when the concentration is less than setting value, PLC (1-1) sends finger
Ammonia circulation pump (1-4) is opened in order and ammonia electrically operated valve (4-2) is entered in outdoor, passes through 304 stainless steels or PVDF materials
Low concentration ammoniacal liquor in medicine-chest (2-1) and ammonia are mixed into high concentration ammoniacal liquor by ejector (4-1), through ammonia circulation blowback water pipe
(2-2) is transmitted back to medicine-chest (2-1) again；When reaching setting value by PLC (1-1) send instruction close ammonia circulation pump (1-4) and
Ammonia electrically operated valve (4-2) is entered in outdoor；The liquid level sensor (2-11) of medicine-chest (2-1) sends liquid level signal to PLC (1-1),
When liquid level is less than the lower bound position of setting value, PLC (1-1) sends instruction and opens demineralized water water inlet electrically operated valve (1-5), to medicine-chest
(2-1) fills demineralized water；When reach level set value it is high spacing when, PLC (1-1) send instruction close demineralized water intake motor-driven valve
Door (1-5)；
When filling demineralized water to medicine-chest (2-1) by filling pipe (2-6), medicine-chest (2-1) liquid level rises, because system is closed, liquid level
The gas on top is compressed, and because second gas check-valves (2-10) is closed in pressured state, gas can only be from top
Portion is discharged in ammonia scrubber (2-4) demineralized water, and the ammonia in air is absorbed by demineralized water, and air passes through pipeline (2-7) and
One gas check valve (2-8) discharge is outdoor；When stopping making up a prescription, and with the ammoniacal liquor configured to during unit dosing, liquid level is gradual
During decline, the headroom of medicine-chest (2-1) forms negative pressure, and at this moment first gas check-valves (2-8) is closed, when negative pressure reaches
It is opened to second gas check-valves (2-10) during certain value, air enters medicine-chest (2-1), and after negative pressure is destroyed, second gas is stopped
Return valve (2-10) and close automatically；
Ammonia content in ammonia detector (3-1) detection ammonia absorption protective device (4) surrounding air, when more than setting value,
Sound and light alarm instrument (3-2) and remote alarms instrument (3-3) can send sound and light alarm on the spot and remote alarms respectively on the spot, and notify remote
Square operator on duty's processing；Ammonia detector (3-1) is sent simultaneously enters ammonia electrically operated valve (4-2) outside instruction close chamber；Work people
Member outer between dosing can close manually operated door of ammonification.
3. according to claim 2 match somebody with somebody ammonia method automatically, it is characterised in that：The reduction formula of the concentration of the ammoniacal liquor is：c
=(13.2S2+62.7S)×10-7(%), wherein c are weights of ammonia percent concentration, and S is electrical conductivity, and unit is μ S/cm.
4. according to claim 2 match somebody with somebody ammonia method automatically, it is characterised in that：Can freely set needs to match somebody with somebody the dense of ammoniacal liquor
Degree, ammonia concn are more than 2.5% in the conductance electrode (2-3) that 2.5% electrode constant chosen below is 0.1, concentration, select electrode
Constant is 1 conductance electrode (2-3).
5. according to claim 2 match somebody with somebody ammonia method automatically, it is characterised in that：The lower bound position of the liquid level of medicine-chest (2-1) and height
It is spacing freely to set, but lower bound position cannot be below 0, the high spacing maximum range that must not be higher than liquid level gauge.
6. according to claim 2 match somebody with somebody ammonia method automatically, it is characterised in that：The ammonia concn of medicine-chest (2-1) is less than setting
During value, PLC (1-1) sends instruction unpack ammonia circulation pump (1-4), and outdoor is opened after 5 seconds and enters ammonia electrically operated valve (4-2)；When
Sent when reaching setting value by PLC (1-1) and enter ammonia electrically operated valve (4-2) outside instruction close chamber, ammonia circulation pump is closed after 5 seconds
(1-4)。
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| CN201710829350.2A CN107551837A (en) | 2017-09-14 | 2017-09-14 | One kind improvement is safety-type to match somebody with somebody ammonia device and matches somebody with somebody ammonia method automatically automatically |
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|---|---|---|---|
| CN201710829350.2A CN107551837A (en) | 2017-09-14 | 2017-09-14 | One kind improvement is safety-type to match somebody with somebody ammonia device and matches somebody with somebody ammonia method automatically automatically |
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| CN109513356A (en) * | 2018-09-03 | 2019-03-26 | 云南聚杰环保科技有限公司 | A kind of industry Gamma Magnitude highly basic high-precision, full-automatic preparing process technology |
| CN110282760A (en) * | 2019-07-02 | 2019-09-27 | 国家能源集团谏壁发电厂 | A kind of boiler feedwater dosing essential safe type based on concentrated ammonia liquor matches ammonia device automatically |
| CN110498426A (en) * | 2019-09-20 | 2019-11-26 | 中化重庆涪陵化工有限公司 | It is a kind of to digitize online ammonia concn regulating system and its method |
| CN111841256A (en) * | 2020-08-18 | 2020-10-30 | 中冶北方（大连）工程技术有限公司 | System and method for controlling temperature of ammonia water in ammonia water absorption tower |
| CN111841259A (en) * | 2020-08-18 | 2020-10-30 | 中冶北方（大连）工程技术有限公司 | Control system and method for cyclic absorption process of ammonia water absorption tower |
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| CN111841260A (en) * | 2020-08-18 | 2020-10-30 | 中冶北方（大连）工程技术有限公司 | Ammonia water recovery intelligent control system and method for ammonia water absorption tower |
| CN111841258A (en) * | 2020-08-18 | 2020-10-30 | 中冶北方（大连）工程技术有限公司 | Water supplementing system and method for ammonia water absorption tower |
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| CN109513356A (en) * | 2018-09-03 | 2019-03-26 | 云南聚杰环保科技有限公司 | A kind of industry Gamma Magnitude highly basic high-precision, full-automatic preparing process technology |
| CN110282760A (en) * | 2019-07-02 | 2019-09-27 | 国家能源集团谏壁发电厂 | A kind of boiler feedwater dosing essential safe type based on concentrated ammonia liquor matches ammonia device automatically |
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